Internal-combustion engine



FIG. 1 is a front-right perspective view of an internal-combustionengine with non-claimed environmental structure shown in dashed lines;

FIG. 2 is a back-left perspective view thereof;

FIG. 3 is a front-left perspective view thereof;

FIG. 4 is a back-right perspective view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan thereof;

FIG. 8 is a right side elevation view thereof;

FIG. 9 is a left side elevation view thereof;

FIG. 10 is a back-right auxiliary view, free of non-claimedenvironmental structure, of the internal-combustion engine;

FIG. 11 is a front elevation auxiliary view of the internal-combustionengine;

FIG. 12 is a rear elevation auxiliary view of the internal-combustionengine;

FIG. 13 is a top plan auxiliary view of the internal-combustion engine;

FIG. 14 is a bottom plan auxiliary view of the internal-combustionengine;

FIG. 15 is a right side auxiliary view of the internal-combustionengine; and,

FIG. 16 is a left side auxiliary view of the internal-combustion engine.

The broken lines in the drawings illustrate portions of theinternal-combustion engine that forms no part of the claimed design.

CLAIM The ornamental design for an internal-combustion engine, as shown and described. 